[onos-4531, onos-4532] SFC web gui implementation

Change-Id: If7a515d4f3fac9736e98570e8e78af6003c5bef8
diff --git a/apps/vtn/sfcweb/src/main/resources/app/view/sfcwebTopov/sfcwebTopov.css b/apps/vtn/sfcweb/src/main/resources/app/view/sfcwebTopov/sfcwebTopov.css
new file mode 100755
index 0000000..8729afe
--- /dev/null
+++ b/apps/vtn/sfcweb/src/main/resources/app/view/sfcwebTopov/sfcwebTopov.css
@@ -0,0 +1 @@
+/* css for sfcweb app topology overlay  */